Wave dispersion characteristics in fluid-filled carbon nanotubes embedded in an elastic medium

This paper reports the result of an investigation into the wave dispersion characteristic in fluid-filled carbon nanotubes (CNTs) embedded in an elastic medium. Based on an analysis method for a coupled system between the fluid-filled and the deformation of CNTs, the effect of a surrounding medium on the response of a fluid loading term in the CNTs is described. The result obtained indicates that for different wave modes there exist corresponding critical frequencies at which the velocity of wave propagation drops dramatically and some cut-off frequencies before which the corresponding wave modes does not appear; the response of the fluid loading item in fluid-filled CNTs embedded in an elastic medium is dependent on the axial wave mode, the circumferential wave mode, the radial constraint of the surrounding elastic medium and the response frequency of the coupled system. New features for the wave dispersion characteristic and the response of a fluid loading term in fluid-filled CNTs and meaningful results are useful in the design of a nano device, where CNTs act as basic elements for a conveying fluid.